摘要
为了在以太无源光网络(EPON)中实现集成服务模型,结合EPON的特殊架构,对子网带宽管理协议(SBM)进行改进,提出了在EPON中实现资源预留的解决方案.将基于会话的状态刷新转变为基于逻辑链路标识符(LLID)的组刷新,减小了信令开销.为控制资源预留业务的实际服务速率,提出了带逼近因子的P2PFQ调度算法,一方面缓解了PFQ系统的数据超前发送现象;另一方面改善了best-effort业务的排队时延.
Based on EPON architecture,an improved Subnet Bandwidth Manager （SBM） protocol was proposed to implement IntServ model in EPON. To reduce protocol overhead, it substitutes LLID-based soft state refreshment for traditional session-based refreshment. To achieve linear relation between service rates and reserved rates of guaranteed services, the P^2PFQ scheduling algorithm was presented. Depending on an approximation factor, the phenomenon that the PFQ is ahead of GPS is eliminated. Furthermore, the queueing delay and business of best-effort services are efficiently improved.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2006年第3期416-420,共5页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金(60502033)
上海市科委技术发展基金(04dz12045)资助项目
关键词
集成服务
以太无源光网络
资源预留
分组调度
integrated service
Ethernet passive optical network（EPON）
resource reservation
packet scheduling
